Nepal floods: Whistles, shouts warned Trishuli folks as river rose 30ft in 30 mins
Devastating floods in Nepal caused by a sudden rise in the Trishuli and Bhote Koshi rivers left residents scrambling for safety as warning systems failed in the upper basin. While downstream SMS alerts saved lives, the event has highlighted the need for better cross-border data sharing and real-time monitoring.
Why it matters
The disaster underscores the vulnerability of Himalayan communities to climate-induced hazards and the critical importance of international cooperation in disaster mitigation.
Whistles and shouts became the last line of warning along stretches of Trishuli and Bhote Koshi river on Wednesday as the Nepal-Tibet flood tore downstream, forcing residents to scramble up the banks while the river rose by nearly 30ft in just 30 minutes at one monitoring point.The speed of the rise left little margin for delay. ICIMOD said Trishuli at Galchhi rose by as much as nine metres — nearly 30ft — within 30 minutes, while Malekhu recorded a seven-metre rise over a similar period. Several monitoring stations were damaged or swept away as the flood moved downstream.Nepal’s warning system began sending alerts after authorities learnt of the flood, but the upper-basin network failed to provide advance notice. Binod Parajuli, senior divisional hydrologist at Flood Forecasting Division, said automatic stations in upper Bhote Koshi stopped transmitting before they could alert officials.
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